Question

How to convert 300 mL/hr to ML/min?

I don't know what ML/hr or ML/min means

Answer 1

`300 \ "mL/hr"=5 \ "mL/min"`

Explanation:

Well, if you have a rate of `300 \ "mL/hr"`, it means that something is probably flowing (usually a liquid) at a rate of `300` milliliters per hour.

That rate can also mean that a liquid is filling up a container at a rate of `300` milliliters per hour.

Anyways, to convert from milliliters per hour to milliliters per minute, we just divide by `60`, since `1 \ "hr"=60 \ "min"`.

So, we got:

`300 \ "mL/hr"`

`=300 \ "mL/"60 \ "min"`

`=5 \ "mL/min"`

Answer 2

I'll show you below.

Explanation:

I remember seeing my HS chem teacher do something like this in monotone voice. "This cancels with this, and this cancels with this", on and on, and I was like, "wait, what?!"

First off, I'm going to assume ML is megaliters. I think that is right, but rarely use that unit.

We are going to get mL into ML (i'll go through L), and then hours into minutes.

`300"mL"/"hr"xx("1L"/"1000mL")xx("1ML"/(10^6L))`
This gets us into `"ML"/"hr"`
because if you just do the units, you've got:
`"mL*L*ML"/"hr*mL*L"`
and this simplifies to `"ML"/"hr"` = `3xx10^-7 "ML"/"hr"`

You need it per minute, so we'll sort that out down here.
`3xx10^-7 "ML"/"hr"xx"1hr"/"60min"` = `5xx10^-9 "ML"/"min"`

We could have done the hour to minute all in one line:
`300"mL"/"hr"xx("1L"/"1000mL")xx("1ML"/(10^6L))xx"1hr"/"60min"`,
but I like to break them up.

Hope that helps.